US3301993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded joint and apparatus and method for making same
Assignee: North American Aviation Corp
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Filing: 1962-05-21
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Granted: 1967-01-31
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Edward S Boyd
- 👤 Vene L Darby
- 👤 Edwin E Hatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/147; H01J37/15; B; B23; B23K; B23K15/00; B23K15/06; H01J37/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
APPARATUS FOR WELDING ON A WORKPIECE, COMPRISING: A CHAMBER OPENED ON ONE END, SAID OPEN END HAVING SEALING MEANS THEREON FOR CONTACTING A SURFACE OF SAID WORKPIECE IN SEALED RELATIONSHIP THEREWITH, SO THAT SAID WORKPIECE AND SAID CHAMBER IN COMBINATION FORM AN ENCLOSURE ISOLATED FROM SURROUNDING ATMOSPHERE, EVACUATING MEANS OPERATIVELY RELATED TO SAID CHAMBER FOR EVACUATING SAID ENCLOSURE, AND WELDING MEANS INCLUDING AN ELECTRON BEAM SOURCE MOUNTED ON SAID CHAMBER FOR APPLYING WELDING HEAT TO SAID WORKPIECE WHILE SAID ENCLOSURE IS EVACUATED OF ATMOSPHERE.
Claim 2
Dependent Claim
84 words
APPARATUS FOR WELDING ON A WORKPIECE, COMPRISING: A CHAMBER OPENED ON ONE END, SAID OPEN END HAVING SEALING MEANS THEREON FOR CONTACTING A SURFACE OF SAID WORKPIECE IN SEALED RELATIONSHIP THEREWITH, SO THAT SAID WORKPIECE AND SAID CHAMBER IN COMBINATION FORM AN ENCLOSURE ISOLATED FROM SURROUNDING ATMOSPHERE, EVACUATING MEANS OPERATIVELY RELATED TO SAID CHAMBER FOR EVACUATING SAID ENCLOSURE, AND WELDING MEANS INCLUDING AN ELECTRON BEAM SOURCE MOUNTED ON SAID CHAMBER FOR APPLYING WELDING HEAT TO SAID WORKPIECE WHILE SAID ENCLOSURE IS EVACUATED OF ATMOSPHERE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |